I did like Pawan on my MBP with a 30GB Bootcamp partition and it works just great. Only little snag is with Fusion Windows (Vista Business) can't hibernate, just shutdown. I'm guessing that's a limitation of running it this way and it's not a huge problem. Mostly I run Vista with Fusion at work so I start it in the morning and shut it down at night. Then I can boot into Vista with Bootcamp when I need to.